Generate jCheck code according to ActiveModel validations

CouchRest::ExtendedDocument provides aditional features to the standard CouchRest::Document class such as properties, view designs, callbacks, typecasting and validations.

A Ruby library for talking to the HMRC Government Gateway. This provides a builder for creating classes that can generate the XML needed complete with type information and runtime validation.

Validations for immutable Ruby objects

Email Detected is a simple tool for verifying an email address exists. It's free and quite easy to use :smile: .Many times as developers we were putting validation statements for checking email addresses format. This gem will complete your existing setups with validator that actually connects wit...

GTIN provides basic validation, checksum and conversion functionality for UPC, EAN and GTIN barcode values.

RUT/RUN Chilean validator for Rails models

Simple, powerful, and constraint-based validation

ActiveRecord Tablefree Models provides a simple mixin for creating models that are not bound to the database. This approach is useful for taking advantage of the features of ActiveRecord such as validation, relationships, nested_attributes, etc.

Combine email validation and transformations to produce canonical email addresses.

This engine allows users to inject requests into a queue to be processed. The queue handles bank account validations, credit payments, debit orders and collecting bank statements/notify me statements.

Rack parameter validation and type coercion.

Provides more advanced and flexible 'if then then that' style conditional validation. Validate fields based on the values of other fields in your model.

When IBAN validation is not enough

ActiveModel email validation. Checks MX records, sub address, regex, whitelisted and blacklisted check

AddressValidate is a ruby wrapper for integrating with the USPS address validation api.

Validate your ActiveRecord models on the client, showing their error and success messages by providing a validation controller.

Custom Ruby on Rails form builder that generates GOV.UK elements styled markup for form inputs, including error validation messages.

Parameter whitelisting for Sinatra. Provides validation, defaults, and post-processing.

Adds validation methods to ActiveModel for validating dates and times. Works with multiple ORMS.